During Deep Sleep, microcontrollers consume very low currents, and batteries live longer. Unfortunately is not easy to measure these small currents. Today we will check out two small boxes which promise to make this possible. And we will use the 10’000$ professional Keysight N6705C Power Analyzer to establish the reference.
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New information technology, the Internet of Things (IoT) is changing our lives. The Bluetooth® low energy (BLE) standard is aimed at IoT applications and dramatically extends battery life. In order to implement it, there is a need to reduce the amount of unused power from existing devices, and Engineers are therefore exploring component level dynamic current consumption, which is difficult to measure, especially for low-power devices used in IoT enabled products, because of the limited dynamic range, large measurement noise and limited bandwidth.
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University motorsport association uses Hioki power analyzer for efficiency measurements and portable PicoScope
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As a technology partner, Computer Controls supports the Akademischer Motorsportverein Zürich (AMZ) with professional knowledge and high-precision instrumentation. The AMZ was founded in 2006 by students at ETH Zurich, who develop a prototype vehicle for the various “Formula Student” races in Europe each year. The association gives students an opportunity to put their theoretical engineering knowledge into practice in a very complex product.
The power dissipation of an inverter can be determined with the aid of a power analyzer. On their motor test stand the AMZ Racing Team uses a Hioki PW6001 Power Analyzer to carry out validation tests for power circuitry and motors. The power dissipation of the components can be determined quickly and easily with the measurement setup described here. The power analyzer computes the Fourier components of the measured signals and directly outputs the derived effective, apparent and reactive power values. Based on the measured torque and motor speed, it can also indicate the motor efficiency by calculating the difference between the input power and the effective mechanical output.
Figure 1: Test setup for making measurements with the power analyzer on the AMZ test stand